I am looking for information on how to convert a 100W VHF 5326 back to its base radio, the 50W 5318. I want to use this radio for CAP and need 50W and frequency down to 139 MHz. I know it can be done because I have another 532x that is now 50W and low VHF capable. Does the bolt on added PA module need to be removed or can it just be tuned lower and power reduced?